2023 Alpina B4 Gran Coupe - story fullscreen Fullscreen

2023 Alpina B4 Gran Coupe

Performance-wise, the Alpina B4 Gran Coupe will be placed in between the M4 and the M4 Competition

When BMW launched the 4 Series Gran Coupe back in 2021, it made it very clear that an M performance version will never happen. But that’s okay, because Alpina just launched something a little bit better than the M4 Gran Coupe. Spied testing quite a few times before, the new B4 Gran Coupe will be put on sale in June of 2022.

What powers the Alpina B4 Gran Coupe?

2023 Alpina B4 Gran Coupe
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The new B4 Gan Coupe is powered by a 3.0-liter straight-six cylinder engine fitted with Alpina-specific flow-optimized turbine housings. These will convert exhaust gas energy into boost pressure at low engine speeds. The engine also comes equipped with a large intercooler, plus an optimized air intake duct with large-volume air filter housings.

In the B4, the engine delivers a total of 495 horsepower and 538 pound-feet of torque - numbers that place it right in between the standard M3/M4 and the M3/M4 Competition.

2023 Alpina B4 Gran Coupe Exterior
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When it comes to the performance figures, the B4 is superior to both the M3/M4 and the M3/M4 Competition. It goes from 0 to 62 mph in just 3.7 seconds and up to a top speed of 187 mph. By comparison, the M4 goes from 0 to 62 mph in 4.1 seconds, while the Competition version does the same sprint in 3.8 seconds. The top speed is 180 mph for both models when you opt for the M Driver’s Package.

2023 Alpina B4 Gran Coupe Exterior
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In Germany, the new B4 will be priced at €91,800 (about $102,500 at the current exchange rates)

The engine sends its power via an eight-speed automatic and the xDrive all-wheel-drive system to all four wheels. Also, a special exhaust system with four end pipes completely transform the sound of the straight-six engine.

The model will also be offered with an electronically controlled rear limited-slip differential that ensures optimal traction and agility. Alpina’s Sport Suspension is also part of the package. It features a negative camber of 1.25-inch at the front axle, specially developed front-axle anti-roll bars, a bespoke spring, and damper configuration.

2023 Alpina B4 Gran Coupe specifications
Engine 3.0-liter straight-six
Capacity (cc) 2993
Bore (mm) 84,0
Stroke (mm) 90,0
Compression ratio (:1) 9,3
Max output (kW (hp) / rpm) 495 HP @ 5,000 - 7,000 RPM
Max torque (Nm / 1/min) 538 LB-FT @ 2,500 - 4,500 RPM
Acceleration 0-100 km/h (s) 3,7
Top speed 301 km/h (187 mph)

How about the exterior and the interior?

2023 Alpina B4 Gran Coupe Exterior
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Alpina launched the new B4 - an alternative to the M4 Gran Coupe which will never be produced

When it comes to the exterior look, the new B4 is "characterized by an expressive, elegant design with an elongated silhouette and flowing roofline." In general, it looks pretty much identical to the M3/M4, but it gets a different front spoiler and a rear spoiler, the grille features chrome surrounds, and there are, of course, the traditional Alpina logos.

Alpina B4 Gran Coupe exterior dimensions
Length (mm) 4792
Width (mm) 1850 (2073)
Height, unladen (mm) 1440
Wheelbase (mm) 2856
Track, front (mm) 1593
Track, rear (mm) 1588
2023 Alpina B4 Gran Coupe Exterior
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They are wrapped in Pirelli P ZERO ultra-high performance tires that offer high levels of grip and lateral support

The most distinctive feature of the exterior look is the new set of wheels. Sized at 20-inch, the new wheels are a modern interpretation of the traditional Alpina Classic design. The wheels feature a long and thin spoke design, and it was built in a complex forging process that keeps the weight down to just 12 kilos (26.5 pounds). The wheels are wrapped in Pirelli P ZERO ultra-high performance tires that offer high levels of grip and lateral support.

2023 Alpina B4 Gran Coupe Interior
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As for the interior, the B4 is a little bit more luxury-focused than the M3/M4. Both the seats and the steering wheel are hand-stitched in luxurious Lavalina leather, while a special plaque placed on the console just behind the iDrive controller will display the car’s build number.

The B4 has a minimum cargo capacity of 470 liters (16.5 cubic feet) and a maximum capacity of 1,290 liters (45.5 cubic feet). Just for the sake of comparison, with all seats in place, the M3 has a cargo room of 13 cubic feet.

How much does the Alpina B4 Gran Coupe Cost?

2023 Alpina B4 Gran Coupe Exterior
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In Germany, the new B4 Gran Coupe will be priced from €91,800 (about $102,500 at the current exchange rates). By comparison, in Germany, the standard BMW M4 is priced at €65,338 and the M4 Competition at €67,977.

The new Alpina B4 will go on sale in Europe in July 2022, with sales in the States to follow later in the year.

Alina Moore
Alina Moore
Alina Joined the Topspeed.com team in the early 2000s as one of the outlets very first experts, and she’s been with Topspeed.com ever since. Over the years, she’s served various roles, but today she’s is relied on heavily to verify automotive facts, assist with formatting, and discover new and engaging topics.  Read full bio
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